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Family Gonatozygaceae

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Chapter Summary

This chapter focuses on the family Gonatozygaceae that belong two genera: Genicularia De Bary, with characteristically spiralled, parietal chloroplasts and Gonatozygon De Bary with more ore less straight, axile chloroplasts. Genicularia species are very rare and have never been found in the Netherlands. Representatives of the genus Gonatozygon occur in acidic as well as alkaline waters, mostly benthic, sometimes planktonic. The chapter analyses the characteristics of Gonatozygon aculeatum, Gonatozygon brebissonii, Gonatozygon kinahanii and Gonatozygon monotaenium. Gonatozygon aculeatum cells are long-cylindric. Apices of the cells are slightly club-shaped. Cell wall beset with delicate spines, 2 to 10 µm in length. Gonatozygon brebissonii Cell wall beset with rounded or acute granules. Zygospore is globular and smooth walled. Cell length (50-) 100-200 (-300) µm, breadth 4-9 µm. Gonatozygon kinahanii cells are long-cylindrical. Cell length is 150-500 µm, and breadth is 10-20 µm. Gonatozygon monotaenium cells are long-cylindrical in shape.

Keywords: Genicularia; Genicularia; Gonatozygaceae; Gonatozygon aculeatum; Gonatozygon brebissonii; Gonatozygon kinahanii; Gonatozygon monotaenium; Gonatozygon



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